I Was Only Playing with Her Feelings, So Why Did the Heroine Become Yandere?

[Transformation + Yandere + Western Fantasy + 1v1 Pure Romance + Plot-Driven + Loli Transformation + Single Female Lead + No Marriage]

After transmigrating into a Western fantasy world, the good news was that there was a System. The bad news was that it arrived a hundred years late. Naiveil had already become a legendary mage by the time it finally showed up.

Her first mission from the start was to save the female lead, the person destined for her. For the sake of the female lead's wish to become a god, she had to save her, but not like this.

So Naiveil transformed into a frail little girl and went to the female lead to play the victim.

"I'm sorry, please don't bully me!"

"I didn't know I wasn't allowed to rest here. I'll leave right away!"

After earning the female lead's concern and help with her act, Naiveil made a life-draining strike when the girl was in danger of being kidnapped, then fled. Even after the female lead found her and brought her home, she kept playing the victim, leaving a deep impression on her.

She would gradually isolate the people around the female lead and drive them away, until she was the only one left by her side. Then she would fake her own death in front of her and use the female lead's feelings to become the seventh true goddess of the continent. That was what Naiveil had planned.

But after solving the problem with the female lead's magical aptitude, Naiveil realized everything seemed to have spiraled out of control... Had the female lead become a yandere?!

"Nana, so you were deceiving me all along? But it doesn't matter, since you're the person destined for me!"

"Still, you deceived me so cruelly before. So now, please make it up to me, my precious Nana baby, in, dou, ble, the, mea, sure."